Work support for stock-fitting machines



NQV. 4

A. E. JOHNSON WORK SUPPORT FOR STOCK FITTING MACHINES Original Filed April 14, 1919 Patented Nov. 4, 1924.

UNITED STATES PATENT OFFICE.

ALBERT E. JOHNSON, or BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, or PATEE-SON, NEW JERSEY, A CORPORATION on NEW JERSEY.

WORK SUPPORT FOR STOCK-FITTING MACHINES.

Original application filed. April 14, 1919, Serial No. 289,880. Divided and this application filed December 11, 1920. Serial No. 430,019.

T 0 all whom it may concern.

Be it known that I, ALBERT E. JOHNSON, a citizen of the United'States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Work Supports for Stock-Fitting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. r

The present inventionrelates to work sup ports for stock fitting machines, and more particularly to means for adjusting the work support of a stock fitting machine relatively to the operating instrumentalities of the machine in accordance with the thickness of the work to be operated upon.

The invention is hereinshown as applied to the turn sole channeling machine disclosed in United States Letters Patent No. 1,506,182, granted Aug. 26, 1924, upon an application filed by the present inventor, from which the present application is a division, but the invention is not limited in its use to the type of machine illustrated.

The object of the present invention is to provide, in a shoe machine employing a work support, improved means for adjusting the.

work support relatively to the operating instrumentalities of the machine to provide for variations in the thickness of the work to be operated on, whereby an increased range of adjustment may be obtained with the same amount of movement of the adj usting means as has heretofore been required.

To the accomplishment of this object and such others as may hereinafter appear, as will readily be understood by those skilled in the art, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended claims.

The preferred form of the invention is illustrated in the accompanying drawings, in which Figure 1 is a View, in rear elevation, of the sole channeling machine disclosed in said parent application, showing the application thereto of the improved means for adjusting the work support; Fig. 2 is a left end elevation of a portion, of the machine shown in Fig. 1, illustrating particularly the work support adjusting means; and Fig. 3 is a detail sectional view taken substantially on the line 8-3 of Fig. 2.

In the illustrated embodiment of the inyention, the head 4 (Fig. 1) of the channeling machine, with its operating instrumentallties and the actuating mechanism therefor, is the same as is illustrated and descrlbed in said parent application. These parts are merely illustrative of a. machine to which the present invention may be applied and, therefore, need not be described herein. As shown, the work support comprises the usual circular table 6 having a slightly convex upper face for engaging the work. The table 6 is vertically movable to permit the insertion and removal of the work, as illustrated a turn sole, between the table and the operating instrumentalities of the machine. To this end the table 6 is supported upon a. spindle 8 carried in a sleeve 10 which is mounted for vertical movement in a bore 12 in the frame of the machine. The sleeve 10 is actuated to raise or lower the work support by means of mechanism which is indicated generally at 14 in Figs. 1 and 2, and which is connected through a chain 16 with a foot treadle, not shown, at the base of the machine. The mechanism 14 for raising and lowering the work support is substan tially the same in its construction and mode or operation as corresponding mechanism disclosed in Letters Patent of the United' States No. 984,772, granted February 2, 1911, to William C. Meyer.

In Letters Patent of the United States to Adam H. Prenzel, Reissue No. 13,375, grant ed F rebruary 27, 1912, a turn channeling ma.- chine is disclosed having a work supporting table which is adjustable toward and from the knives of the machine, in accordance with variations in the thickness of the work, by a Worm or screw that is threaded into a bore in the lower end of the spindle of said table. This worm, in said machine, is capable of being turned through a partial revolution to make the desired adjustment of the work table by means of a handle that is secured to the lower end of the worm. The complete range of adjustment for a variation of eight irons in sole thickness requires an angular movement of the handle through about one hundred eighty degrees.

I11 accordance with the present invention, the work supporting table is capable of being adjusted toward and from the operating instrumentalities of the machine to which it is applied, through the combined action of the threads of a double worm or screw,

whereby the amount of movement of the.

table responsive to the amount of angular movement of the operating handle heretofore required is greatly increased. As shown in the drawings, the present means for vertically adjusting the table 6 for variations in sole thickness comprises a worm or screw in the form of a ring 18 which is internally and externally threaded in reverse directions and is screwed on the lower end of the sleeve 10 and into a bore 20 in the usual collar '22 which is fixed relatively to the ring 18 and forms a rigid part of the frame with respect to the work table. The sleeve 10 is prevented from rotating in thebore 12 by means of a guide pin 24 which is secured to the frame of the machine and enters an aperture 1n a horizontalflug 26 projecting from the upper end of the sleeve. The ring 18 is adapted. to be turned within the collar 22 and thus vertically adjust the work table by means of a thumb piece 28 in the form ot' a pointer. This pointer cooperates with a scale 30 denoting irons, on the frame of the machine whereby the operator is enabledto determine the amount of vertical adjustment of the work table required for the thickness of the sole to be operated upon. The double thread construction of the ad'- justing worm or ring 18 augments the movement of the work table'to such an extent that the entire eight iron range of adjustment re quired may be obtained by an angular movement of the thumb piece 28 through a relatively small angle, about ninety degrees,

' making the adjustment easy and speedy.

As shown, the work table 6,-instead. of having the usual step-by-step rotary 1nove ment, is mounted for free rotation upon a ball bearing 32 (Fig. 1) so that it may easily rotate to travel with the work feeding device of the 'inachine during the effective movements of said device, thus providing for an even forward movement of the work.

Such mounting of the work table, however, forms no part of the present invention.

The nature and scope of the present invention having been indicated and the preferred embodiment thereof having been specifically descrlbed, what s claimed as new,

1. A work support for a stock fitting ina-' chine comprising, in combination, a bracket bored out to form a stationarysleeve, an internally-threaded supporting sleeveand a manually-operable toggle connecting it to the bracket, a work-supporting table, a plunger carrying the table and guided by the stationary sleeve, the plunger having a lower externally-threaded portion -concentrically arranged within the supporting sleeve, and an internally and externally threaded ring arranged between the supporting sleeveand the lower portion of the plunger in such a manner that turnin'g the ring raises the plunger with respect to the ring and the ring with respect to the supporting sleeve to lift the table a substantial distance for a relatively small turning movement of the ring.

2. A work support for a stock fitting machine comprising,in combination, a stationary upper sleeve having a smooth inner surface, an internally threaded supporting sleeve arranged concentrically of and below the stationary sleeve, a work-supporting table, a plunger carrying the table and guid ed by the stationary sleeve, the plunger hav-' ing a lower externally-threaded portion concentrically arranged within'the supporting sleeve, and an internally and externally threaded ring between the'supporting sleeve and the lower portion of the plunger in such a manner that turning the ring raises the plunger with respect to the ring and the ring: with respect to the supporting sleeve to liftthe table a substantial distance for a relatlvely small turning movement of the ring.

3. A support as defined by claimv2, in

which the stationary sleeve is provided externally with a scale and the ring is provided with a thumb piecejtobe use'dt'o manipulate the ring, the thumb piece, being shaped and arranged to provide a pointer to indicate on the scale the adjustmentof the table. v

=4. A work support-of the class described having, in combination, a stationary. .upper sleeve formed with a smooth inner surface,a

ing said device raises it with respect to the supporting member and simultaneously raises the plunger with respect to "the annular device, to give a substantial vertical adjust-.

ment of the table for a relatively small movement of said device.

5. A work support of the class described having, in combination, a stationary upper sleeve formed with a smooth inner surface, a table, a plunger supporting the table and guided by the stationary sleeve, the plunger being threaded at its lower end, a supporting member below the stationary sleeve which is reversely threaded with respect to the threaded part of the plunger, the threa'dedparts of the plunger and the supporting member with respect to the supporting member and simultaneously raises the plunger with respect to the annular device to give a sub- 1 stantial vertical adjustment of the table for a relatively small movement of said device.

ALBERT E. JOHNSON. 

